Ogle
Ogle is a DVD playback application with full menu support (remembers subtitles, audio selections). Originally written by Björn Englund in 2001, and additional authors who helped port it and submit bugfixes.
It has been removed from use in modern distros, and I'm forking it to bring it up to speed to run again.
What makes Ogle so special is that it supports DVD menu navigation. The only other apps I've seen that can do that on Linux boxes is Xine and VLC. There are other apps out there that are supposed to support it, but they don't work.
